Intraepithelial lymphocytes, scores, mimickers and challenges in diagnosing gluten-sensitive enteropathy (celiac disease)

Figure 5 Gluten-sensitive enteropathy mimickers. A-D: Post-transplant lymphoproliferative disorder, polymorphic type (A: HE, × 50 and inset HE, × 200) showing mononuclear epithelial and stromal infiltration with blasts and high CD20 (B, × 100) on CD3 (C, × 100) lymphocytes and high Epstein-Barr virus replication (in situ hybridization or Epstein-Barr encoding region, × 100); E: Burkitt lymphoma of the duodenum (HE, × 100); F: Tubular adenoma of the duodenum of a patient with familiar adenomatous polyposis (HE, × 200).